Raymarine autopilot control unit - Manual (Page 26)

Chapter 2: Basic Operation 9
If you do not press auto while the display is flashing, the current
heading will be maintained.
Automatic Tack (AUTOTACK)
The ST7000 Plus can access an automatic tack facility that turns the
vessel through a predetermined angle (the factory default is 100°) in
the required direction.
AutoTack to Starboard
• Press the +1 and +10 keys together to tack to starboard.
AutoTack to Port
• Press the -1 and -10 keys together to tack to port.
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